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(No Model.) 3 Sheets-Sheet 1.

G. L, SEABURY. I

STEAM BOILER, No; 387,186. Patented July 31, 1888 vii/156st Inventor:

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3 Sheets-Sheet 2.

(No Model.)

0. L. SEABURY.

STEAM BOILER No. 887,188. Patented July 81, 1888.

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CHARLES L. SEABURY, OF NEW YORK, N. Y., ASSIGNOR TO THE GAS ENGINE ANDPOXVER COMPANY, OF SAME PLACE.

STEAM-=BOILER.

SPECIFICATION forming part of Letters Patent No. 387,186, dated July 31,1888.

(No model.)

To ctZZ whom it may concern:

Be it known that 1, CHARLES L. SEABURY, of the city, county, and Stateof New York, have invented certain new and useful Improvements in theConstruction of Steam- Boilers; and I do hereby declare that thefollowing is a full and exact description thereof, reference being badto the accompanying drawings, and to the letters of reference mark edthereon, making a part of this specification,

in which- Figure l is a front elevation of the boiler with the frontplate removed to expose the pipes therein. Fig. 2 is a vertical sectionin 1 line 0000 of Fig. 1,showing onehalf of the boiler only. Fig. 3 is ahorizontal section in line gm of Fig. 2. Fig. 4. is an elevation of aportion of the upright manifolds, to which the rear ends of the bentheating-tubes are connected. Similar letters indicate like parts in allof the figures.

The object of my invention is to obtain within a given furnace area thelargest possible heating-surface for converting the water admittedthereto into steam, and in such form as to admit of ready access to eachand every part for repair or reconstruction; and it consists in thecombination and arrangement in a furnace of a system of detachable andseparable tubes and water-chambers, as hereinafter fully described.

In the accompanying drawings, A, A, and A represent three large pipes,each fitted upon its upper side with a double row of threaded apertures(see at Z) 1), Figs. 2 and 3) or nozzles, c c,(see Fig. 1,) to serve asmanifolds for a series of vertical tubes, D D D D. These three manifoldsA, A, and A are coupled together to constitute, respectively, the two 0sides and the rear end of a rectangular basefor the boiler, and with thevertical tubes fitted thereto form a lining on the sides and rear forthe ash-pit and firebox of the furnace. The

two side pipes, A and A, are each coupled at 5 their front ends byelbows c e to upright standpipes F F of the same diameter, whose upperends are coupled, respectively, to the two ends of a steam drum orseparator,G, mounted over the front end of the furnace parallel with theface thereof, as shown in Fig. 1.

A feed-pipe, H, from a suitable feed-pump or injector is fitted to thebottom of the drum or separator G, so that the water'supply for theboiler is delivered through said drum or separator, and flows thencedown the two stand-pipes F and F, to pass through the manifolds A, A,and A into the upright tubes D D at the sides and rear of thefire-chamber; The upper ends of the side tubes,D D, are fitted tomanifolds I, (see Fig. 2,) which are preferably rectangular incross-section,and are mounted at the top of the furnace upon said sidetubes and immediately under the drum G. Each of these lateral topmanifolds is connected with the drum by a coupling-tube,

j, terminating in a curved pipe, K, whose open end is bent downwardwithin the drum, as shown in Fig. 2. The rear tubes, D D, in the rearmanifold, A at the back of the firechamber, are fitted each to the lowerend of an upright manifold, L,which is made to reach from the top of thefurnace to within a short distance of the grate-bars, the interveningspace being merely sufficient to allow a proper height to thefire-chamber over the gra'te'bars. These upright manifolds are formedwith rectangular ends. Their front and rear faces are made parallel; buttheir lateral faces are corrugated, as shown in Fig. 4, so that with oneset of manifolds placed in the rear of the other the tubes projectingfrom the front faces of the rear set may pass out between the front setwithout changing the uniformity of the intervals between each horizontaltier of tubes. (See Fig. 4.)

Aserics ofcurved tubes, M ,are fitted to the front faces of theseupright manifolds L Lat the rearof the furnace,t0 extend thence forwardin a nearly horizontal plane toward the front of the furnace, and,bending upward,are made to extend vertically to enter aseries ofmanifolds, N N, the counterpart of the manifolds L L, which are mountedin two tiers in the top of the furnace,under its steam drum or separatorG, as shown in Figs. 1 and 2. The lowermost 5 series of the bent tubes MM extend from the rear quite to the front of the furnace and definethetop of the firechamber. Each successive series of these benttubes inorder above the first are necessarily shorter than the one below it, asshown in Fig. 2, and in this way the space between the top of thefire-chamber and the bottom of the separator is closely filled withthese bent tubes, each connecting an upright manifold L at the rear ofthe furnace with a counterpart horizontal manifold N at the top.

Each of the top manifolds, N N, is connected wit-h the separator G by acoupling-pipe, O, terminating in a curved pipe, P, entering theseparator, and fitted therein with its open end turned downward, asshown in Fig. 2, so that any water carried up with the steam through thetubes will be readily discharged into the separator and the dry steamcollected in the upper portion thereof. to be discharged through asuitable delivery-pipe, Q.

The top and sides of the furnace are closed by a suitable casing, B,which is made to form at the top a smoke-chamber, S, connecting with aflue or chimney, T, in the customary manner. The front of the furnace isalso closed by a detachable plate, (not shown in the drawings,)in whichare fitted the tire-doors and ashpit doors for the furnace.

The grate-bars U U are mounted,in the customary manner, at a level alittle above the side pipes, A A, as shown in Figs. 1 and 2.

The space left in the upper rear portion of the furnace above the benttubes M M is utilized to receive a coil of pipes, V V, connected withthe feed-pipe H and interposed between it and the pump or injector, toserve as a water-heater.

The joints of the elbows for the stand-pipes with the basal manifolds,aswell asof the curved connections of the stand-pipes and of the topmanifolds with the separator,are secured each by means of a boltextending outwardly through a seat in the elbow or bend, and having atits inner end a T-head adapted to engage a cross-bar within the pipe,(see dotted lines in Fig. 2,) so that the joints may be readilyuncoupled by loosening the bolt.

Each of the top manifolds, N, is coupled separately from the others to acorresponding upright manifold by a series of pipes, so as to form onesection, and each section is coupled to the drum G and to the basalmanifold A at the rear independently of all the others, so as to admitof being separately detached and drawn out at the front of the furnaceafter the front plate is removed. In like manner either stand-pipe F orF, with the basal manifold A or A, to which it is attached, may, afterbeing uncoupled from the drum G and from the rear manifold, A be readilydrawn out for inspection or repair-independently of the rest of theboiler.

To facilitate the circulation from and to the drum G through thestand-pipes, manifolds, and heating-tubes, I contemplate fitting a coil,W, atthe front of the furnace, inside of its front plate, to connectwith a steam-pump, Z, (see Fig. 1,) taking its supply from the drum G,and to communicate by branch pipes W W with injectors Y Y, fitted withinthe standpipes F F, as shown in Fig. 1. The water forced into the coilWV is converted therein into steam, so that a much higher pressure isproduced in said coil than in the pipes F F, whereby a powerful jet maybe produced at each injector, which will force the circulation in thepipes. The operation of these injectors is controlled by means ofavalve, Y.

In the operation of the boiler the drum G is fed with a water-supplyintroduced through the heating-coil V V, placed in the upper rearportion of the furnace, and in which the water becomes heated by thewaste heat escaping from the furnace. From the drum G the wa ter flowsdown through the stand-pipes F F to the basal manifolds A A A and thenceup through the series of vertical tubes D D and curved tubes M M, liningthe sides and rear and filling the upper portion of the furnace, and,being vaporized therein, is discharged into the drum or separator G inthe form of steam and water, the water being automatically separatedfrom the steam within said drum.

The products of combustion of the fuel upon the grate-bars U U pass uparound the many tubes, which are all fully exposed to the heat thereof,and out of the smoke-stack T, being carried over the water-heating coilV after leaving the boiler-tubes.

Since the several parts and sections of the boiler admit of beingreadily detached and removed, each in a measure independently of theother, in manner as described, the repair or replacement of any part isreadily effected.

I claim as my invention- 1. The combination, in a steam-boiler, of thebasal manifolds A A A connected and arranged to form a rectangle andinclose the furnace, lateral manifolds I I, placed,respectively, abovethe two lateral basal manifolds A A and parallel therewith, interposedvertical tubes D D, connecting said upper and lower lateral manifolds, aseries of upright manifolds, L L, mounted vertically above the rearbasal manifold, A vertical tubes D D, connecting the upright manifoldsseverally with the rear basal manifold, A a series of horizontalmanifolds, NN, placed between the two upper lateral manifolds, a seriesof bent tubes, M M, connecting each of said horizontal manifolds withone of the upright manifolds L, a steam drum or separator mountedtransversely above the upper manifolds, coupling-pipes connectingseparately each of' the several up per manifolds with said drum,stand-pipes connected, respectively, with the front ends of the lateralbasal manifolds A A and with the bottom of the drum or separator, anouter casing inclosing the entire set of tubes and manifolds, a chimneyconnected with the upper part of said casing, and a water-supply pipeand steam-discharge pipe connected with the steamdrum, all substantiallyin the manner and for the purpose herein set forth.

2. The combination, in a steam-boiler, of a too ITO

series of sections, each constructed of two manifolds, L and N, arrangedin a vertical plane at a right angle to each other and connected by aseries of bent tubes, M M, a steam-drum mounted transversely over thesections, a coupling pipe connecting each horizontal manifold with saiddrum, a basal manifold, A placed transversely beneath the sections, acoupling tube or tubes, D D, connecting the lower end of each uprightmanifold L with said transverse basal manifold A", and pipes,substantially as described, connecting said basal manifold with thedrum, to permita circulation through each of said sections,substantially in the manner and for the purpose herein set forth.

3. The combination, with a sta11d-pipe,F

a drum, G, with which it communicates at its upper end, and a system ofheating-pipes, substantially as described, connecting the lower end ofsaid stand-pipe with said drum, of an injector, Y, fitted in said pipe,a steamgenerating coil, NV, to which said injector is connected andwhich is supplied from the drum G, and a pump, Z, interposed between andconnected to the coil and drum to produce a pressure within the coil,all substantiall y in the manner and for the purpose herein set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHAS. L. SEABURY.

W'itnesses:

A. N. JESBERA, E. M. WATsoN.

